Schweitzer Engineering Laboratories SEL-2711 User manual

SEL-2711
MODBUS PLUS ADAPTER CARD
INSTRUCTION MANUAL
SCHWEITZER ENGINEERING LABORATORIES
2350 NE HOPKINS COURT
PULLMAN, WA USA 99163-5603
TEL: [phone] FAX: [phone]

The software (firmware), schematic drawings, commands, and messages are copyright protected by the United States Copyright Law and
International Treaty provisions. All rights are reserved.You may not copy, alter, disassemble, or reverse-engineer the software. You may not
provide the software to any third party.
All brand or product names appearing in this document are the trademark or registered trademark of their respective holders.
Schweitzer Engineering Laboratories, Inc., , SELOGIC, Connectorized, and Job Done are registered trademarks of Schweitzer Engineering
Laboratories.
The English language manual is the only approved SEL manual.
Copyright © SEL 1997, 1998, 2001 (All rights reserved) Printed in USA.

Date Code 20010105 Manual Change Information i
SEL-2711 Instruction Manual
MANUAL CHANGE INFORMATION
The date code at the bottom of each page of this manual reflects the creation or revision date. Date
codes are changed only on pages that have been revised and any following pages affected by the
revisions (i.e., pagination). If significant revisions are made to a section, the date code on all pages
of the section will be changed to reflect the revision date.
Each time revisions are made, both the main table of contents and the affected individual section
table of contents are regenerated and the date code is changed to reflect the revision date.
Changes in this manual to date are summarized below (most recent revisions listed at top).
Revision
Date Summary of Revisions
The Manual Change Information section has been created to begin a record of revisions to this
manual. All changes will be recorded in this Summary of Revisions table.
20010105 Section 4 - made typographical corrections.
Appendix A - Updated firmware to work with SEL-2030 Communications
Processor interface changes.
981030 Section 4, Target Type - updated information
980601 Section 4 - Added Summary Card
980420 All Sections updated to describe new features in firmware release
SEL-2711-R102
971218 Appendix A - Correction

Date Code 20010105 Table of Contents i
SEL-2711 Instruction Manual
SEL-2711 INSTRUCTION MANUAL
TABLE OF CONTENTS
SECTION 1: INTRODUCTION
SECTION 2: GENERAL DESCRIPTION
SECTION 3: OPERATION AND NETWORK CONFIGURATION
SECTION 4: OPERATION WITHIN SEL-2030
APPENDICES
Appendix A: Firmware Versions in this Manual
Appendix B: Error Codes and Messages
Appendix C: Modbus Plus Message Example

Date Code 980420 Introduction i
SEL-2711 Instruction Manual
TABLE OF CONTENTS
SECTION 1: INTRODUCTION .................................................................. 1-1
References................................................................................................................................1-1
Manual Overview.....................................................................................................................1-1
Background Information....................................................................................................1-1
Section Highlights.............................................................................................................1-2
Conventions..............................................................................................................................1-2
Acronyms, Abbreviations, and Definitions ................................................................................1-2

Date Code 980420 Introduction 1-1
SEL-2711 Instruction Manual
SECTION 1: INTRODUCTION
This section provides an introduction to the manual. This section includes a list of references, an
overview of the manual, a list of conventions used within this manual, and a list of acronyms,
abbreviations, and glossary terms.
We, the employee-owners of Schweitzer Engineering Laboratories, Inc., are devoted to making
electric power safer, more reliable, and more economical. The SEL-2711 Modbus Plus Adapter
Card is designed to assist in meeting this objective.
We appreciate your interest in SEL products and we are dedicated to making sure you are satisfied.
If you have any questions about the SEL-2711 or this manual, please contact us at:
Schweitzer Engineering Laboratories, Inc.
2350 NE Hopkins Court
Pullman, WA USA 99163-5603
Tel: [phone]
Fax: [phone]
We guarantee prompt, courteous, and professional service.
We appreciate any comments or suggestions about new products or product improvements that
would help us make your job easier.
REFERENCES
SEL-2030 Communications Processor User’s Guide
SEL-2020/2030 Communications Processor Reference Manual
Modbus Plus™ Network Planning and Installation Guide
MANUAL OVERVIEW
Background Information
This manual is designed to help you make the most effective use of the SEL-2711 Modbus Plus
Communications Adapter. Each section begins with a detailed table of contents followed by a
short paragraph summarizing the main areas of the section. For more information on the
SEL-2030 or Modbus Plus networks, please see the references listed above.
If you are new to Modbus Plus networks you will want to read sections 2 and 3 to get a good
overview of Modbus Plus and of the SEL-2711. If you are already familiar with Modbus Plus
networks, you can skip directly to section 4 and use section 3 for reference.

1-2 Introduction Date Code 980420
SEL-2711 Instruction Manual
Section Highlights
The following list summarizes the main purpose of each section:
• Section 2: General Description, provides an overview of Modbus Plus networking and a
description of the SEL-2711.
• Section 3: Operation and Network Configuration, describes SEL-2711 operation and
configuration.
• Section 4: Operation Within SEL-2030, provides detailed information on how to use the
SEL-2711 within the SEL-2030 including data maps.
• Appendix A: Firmware Versions, lists the firmware versions this manual applies to.
• Appendix B: Error Codes and Messages, lists the error codes and messages the SEL-2711
generates along with a description of why they might occur.
• Appendix C: Modbus Plus Message Example, illustrates how Modbus Plus application
messages are constructed.
CONVENTIONS
Numbers within this manual are generally shown as decimal values. When a number is shown in
hexadecimal, the letter ‘h’ is appended to the number. For instance, 11 is the decimal number
eleven, but 11h is the hexadecimal number eleven, which is equal to the decimal value 17.
Commands to be entered at a terminal are shown in bold all-caps. Literal terminal screen captures
are shown in a box, like the following example:
*>SET P 17<ENTER>SET P 17<ENTER>
.
.
.
ACRONYMS, ABBREVIATIONS, AND DEFINITIONS
Acronym/
Abbreviation Definition
CPU Central Processing Unit
LED Light Emitting Diode
LSB Least Significant Byte
Modbus Plus™ A 1 Megabit/sec, token-passing network proprietary to Schneider
Automation
MSB Most Significant Byte
node A device connected to the network
RAM Random Access Memory
SEL Schweitzer Engineering Laboratories